Tehuantepec Forecast

October 15, 2025, 9:01 am (UTC: -04:00)
Subject: Tehuantepec Forecast

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This forecast has not been reviewed. It was generated from an automatic model.

WARNINGS
.NONE.

.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30
KT. SEAS TO 2.5 M.
.24 HOUR FORECAST WITHIN 16N95W TO 16N96W TO 15N96W TO 15N95W TO
15N94W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.

A TROUGH EXTENDS FROM SW ARIZONA SOUTHWESTWARD TO ACROSS THE
NORTHERN GULF OF CALIFORNIA AND TO ACROSS SOUTHERN BAJA
CALIFORNIA AS BROAD HIGH PRESSURE RIDGING REMAINS WEST OF
BAJA CALIFORNIA. A COLD FRONT IS ANALYZED FROM NEAR 30N117W TO
28N126W AND TO NEAR 30N135W. FRESH TO NEAR GALE-FORCE NORTHERLY
GAP WINDS ARE ONGOING IN THE GULF OF TEHUANTEPEC WITH 1007 MB
LOW PRESSURE, INVEST EP91, LOCATED TO THE SOUTHEAST OF THE GULF
REGION ALONG THE MONSOON TROUGH NEAR 12N94W. SEAS OVER THIS AREA
5 TO 7 FT. WINDS ARE MODERATE OR LIGHTER UNDER THE BROAD HIGH
PRESSURE AS NOTED IN THE LATEST SCATTEROMETER SATELLITE DATA
PASSES. LOCALLY FRESH NORTHWEST WINDS ARE NEAR CABO CORRIENTES
AND CABO SAN LUCAS AS SEEN IN AN OVERNIGHT SCATTEROMETER
SATELLITE DATA PASS. SEAS ARE 5 TO 7 FT W OF 110W AND OFFSHORE
BAJA CALIFORNIA IN NORTHWEST LONG-PERIOD SWELL, EXCEPT FOR
HIGHER SEAS OF 7 TO 10 FT NORTH OF PUNTA EUGENIA. SEAS ARE ABOUT
4 TO 6 FT E OF 110W IN PRIMARILY SOUTH TO SOUTHWEST SWELL. IN THE
GULF OF CALIFORNIA, SEAS ARE 3 TO 4 FT, EXCEPT FOR SLIGHTLY
HIGHER SEAS OF 4 TO 5 FT IN SOUTHWEST LONG- PERIOD SWELL AT THE
ENTRANCE TO THE GULF.
FOR THE FORECAST, NORTHWEST SWELL MOVING THROUGH THE WATERS WEST
OF BAJA CALIFORNIA WILL GRADUALLY SUBSIDE THROUGH THU MORNING.
FRESH TO STRONG NORTHERLY GAP WINDS WILL PERSIST IN THE GULF OF
TEHUANTEPEC THROUGH EARLY THU AFTERNOON. MEANWHILE, A BROAD AREA
OF LOW PRESSURE, INVEST EP91, IS NEAR THE COAST OF SOUTHERN
MEXICO. ENVIRONMENTAL CONDITIONS APPEAR CONDUCIVE FOR GRADUAL
DEVELOPMENT, AND A TROPICAL DEPRESSION COULD FORM LATE THIS WEEK
OR OVER THE WEEKEND. THIS SYSTEM IS EXPECTED TO MOVE LITTLE
DURING THE NEXT FEW DAYS, BUT A SLOW NORTHWESTWARD MOTION NEAR
THE COAST OF SOUTHERN AND SOUTHWESTERN MEXICO IS EXPECTED BY THE
WEEKEND. REGARDLESS OF DEVELOPMENT, EXPECT INCREASING WINDS AND
BUILDING SEAS.

SHORT-TERM TEHUANTEPEC
TODAY - SSE 11-14, Seas SSW 0-3.9 feet @ 12sec
TONITE - SSE 11-14, Seas SSW 0-3.9 feet @ 12sec
THURSDAY - E 14-18, Seas SSW 5.7-6.7 feet @ 18sec
THURSDAY NIGHT - E 14-18, Seas SSW 5.7-6.7 feet @ 18sec

LONG-TERM TEHUANTEPEC
FRIDAY - ESE 18-22, Seas SSW 6-7.1 feet @ 17sec
SATURDAY - SSE 11-14, Seas SSW 0-7.9 feet @ 16sec
SUNDAY - SW 6-7, Seas N/A ?-? feet @ ?
MONDAY - NW 10-13, Seas N/A ?-? feet @ ?
TUESDAY - E 14-18, Seas N/A ?-? feet @ ?